Analysis of the aphids trapped by Moericke trays in a broad bean field at Oeiras, from October 1978 to May 1979 (Homoptera, Aphidoidea) [injurious insects, Portugal]
Aphid traps can be used for faunistic surveys, for timing cultural practices such as chemical sprays and release of mass-reared natural enemies, and even for predicting aphid infestations in the next season. In the long run, data from traps permit the establishment of flight patterns, which vary to...
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Published in | Agronomia Lusitana Vol. 41 |
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Main Authors | , |
Format | Journal Article |
Language | Portuguese |
Published |
1982
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Subjects | |
Online Access | Get more information |
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Summary: | Aphid traps can be used for faunistic surveys, for timing cultural practices such as chemical sprays and release of mass-reared natural enemies, and even for predicting aphid infestations in the next season. In the long run, data from traps permit the establishment of flight patterns, which vary to a greater or lesser extent with the climatic conditions. The present study reports the utilization of two yellow water trays from 20 October 1978 to 31 May 1979, in a broad bean field at Oeiras (Portugal). The 3264 trapped specimens belonged to 42 genera and, at least, to 81 species. Two different peaks in the flight curves could be observed, in November and May, respectively. The species most frequently caught were Aphis rumicis, A. citricola, Hyalopterus pruni, A. craccivora, Aphis spp. (specimens not identified below generic level), Dysaphis meridialis, Myzus persicae and A. gossypii. The ecology of these species and of others of economic interest is briefly discussed.
PORTUGUES: A utilizacao de armadilhas contra afideos apresenta interesse tanto a curto como a longo prazo. O primeiro aspecto engloba a inventariacao faunistica, a determinacao da oportunidade de realizacao de praticas culturais, como tratamentos quimicos e largadas de controladores criados em laboratorio e, ate, da previsao de infestacoes na epoca seguinte. A longo prazo, permite o estabelecimento de padroes de voo, variaveis em maior ou menor grau com os condicionalismos climaticos. No presente trabalho e descrita a utilizacao de duas armadilhas amarelas de agua, montadas num campo de favas, em Oeiras (Portugal), desde 20 Outubro de 1978 a 31 de Maio de 1979. O numero de afideos capturados foi de 3264, repartindo-se por 42 generos e, pelo menos, 81 especies. Verificou-se haver dois picos distintos no voo dos afideos, um no mes de Novembro, outro em Maio. As especies mais capturadas, foram: Aphis rumicis, Aphis nasturtii, Aphis citricola, Hyalopterus pruni, Aphis craccivora, Aphis spp. (especimenes nao identificados alem do genero), Dysaphis meridialis, Myzus persicae e Aphis gossypii. Apresentam-se algumas consideracoes sobre a ecologia destas especies e de outras com interesse economico. |
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Bibliography: | H10 H |